Hi everyone!
I’m facing a problem with acquiring data from my NI 6259 BNC card.
What I basically want to do is to measure, let’s say, both RPM of the jet engine as well as temperature. I have thermocouple and of course the voltage of thermocouple is proportional to temp. I also have a phototransistor to measure RPM, but… the signal from phototransistor is non-TTL signal. For measuring RPM I’m using code from: “DAQmx: Counting Non-TTL Pulses with Multifunction Board and Labview”. It is using port redirecting and triggering.
Both measurements are ok when run separately. I mean I can measure continuously temperature and plot it to graph in real time. I can measure PRM with very good accuracy as well. But I can to this only separately, I don’t know how to write a program to measure them both together in one VI.I want to measure (and save to file) both RPM and temperature at the same time.
I think it has something with triggering option in RPM measurements, triggering stops all measurements. Is there any way to measure them both?
Thanks in advance,
Maciek